平面非均质性对热储回灌量影响研究——以保定市馆陶组为例  

The Effect of Plane Heterogeneity on the Reinjection Flow of Geothermal Reservoir:A Case Study of the Guantao Formation in Baoding City

作　　者：王腾 胡景宏[1,2] 刘常源 高志前 唐玄[1,2] WANG Teng;HU Jinghong;LIU Changyuan;GAO Zhiqian;TANG Xuan(School of Energy Resources,China University of Geoscience(Beijing),Beijing 100083;Beijing Key Laboratory of Unconventional Natural Gas Geology Evaluation and Development Engineering,Beijing 100083)

机构地区：[1]中国地质大学(北京)能源学院,北京100083 [2]北京市非常规天然气能源地质评价与开发工程,北京100083

出　　处：《地质与勘探》2025年第2期431-440,共10页Geology and Exploration

基　　金：科技部雄安新区科技创新专项“雄安地区地热能开发利用的理论与应用研究”(编号:2022XACX0800)资助。

摘　　要：在地热回灌过程中,部分地热田因回灌水流量远小于设计回灌流量,常导致地热田面临关停的情况。本文以保定市某区块馆陶组热储为研究对象,针对回灌过程中注水效果不佳的问题,分析储层的平面非均质性。利用数值模拟方法,对热力场与流体力场进行耦合,分析四种不同非均质地层对热储回灌量的影响,并建立出最大回灌流量评价方法。模拟结果表明,随着平面非均质性的增强,回灌水流量减小,回灌效果最低可降至均质地层的35%;回灌井与开采井所处区域的平面非均质性对回灌效果影响为20%~65%。该方法能够对平面非均质性与回灌流量进行合理调整,有效保证回灌效果,可拓展到其他地质条件相似的储层使用。In the process of geothermal reinjection,some geothermal fields are facing shutdown due to the reinjection water flow being much smaller than the designed.This work took a block of Guantao Formation geothermal reservoir in Baoding City as the research area in order to solve the problem of lower water injection during the reinjection process.Numerical simulation software was used to couple the thermal field with fluid dynamic field,and numerical simulation calculations were carried out for four different non-homogeneous strata to establish the evaluation method of maximum reinjection flow rate.The results show that the maximum reinjection water flow decreases with the intensification of planar heterogeneity,and the reinjection effect decreases as low as 35% of that in homogenous strata.The planar heterogeneity in the area between reinjection and production wells can affect reinjection effectiveness by 20% to 65%.This method can reasonably adjust the planar heterogeneity and reinjection flow rate,and effectively ensure the reinjection performance,which can be extended to other reservoirs with similar geological conditions.

关 键 词：平面非均质性 地热回灌 砂岩热储 数值模拟 馆陶组 保定市 

分 类 号：P314[天文地球—固体地球物理学]